# CVE-2026-4627: D-Link DIR-825/DIR-825R NTP Service libdeuteron_modules.so handler_update_system_time os command injection

> Remote attackers can execute arbitrary OS commands via the NTP service on unsupported D-Link DIR-825 routers.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Mar 2026
- **Updated:** 24 Mar 2026
- **Also known as:** GHSA-hrwc-gmxj-r522

## What is CVE-2026-4627?

CVE-2026-4627 is a high-severity command injection vulnerability in D-Link DIR-825, published on 24 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was found in D-Link DIR-825 and DIR-825R 1.0.5/4.5.1. Affected is the function handler_update_system_time of the file libdeuteron_modules.so of the component NTP Service. The manipulation results in os command injection. The attack may be launched remotely. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2026-4627?


## How do I fix CVE-2026-4627?

No fix has been published for CVE-2026-4627 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4627 being exploited?

There is no known exploitation of CVE-2026-4627 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4627 and fix it if it is affected.

What it is: CVE-2026-4627 is a high-severity command injection vulnerability in D-Link DIR-825, published on 24 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-4627 in the wild and no public exploit code.

Affected product: D-Link DIR-825. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-4627/ (Markdown: https://insights.sbomify.com/CVE-2026-4627/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4627
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4627
- OSV: https://osv.dev/vulnerability/CVE-2026-4627

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4627/
Summaries are generated and may contain mistakes; the official description above is the record.